Surgical pump



(No Model.)

W. G. CARROLL 8v B. P. HALES. SURGIGAL PUMP.

110.444,690. Patented Jan. 13, 1891.

l l.` l l i UNITED STATES PATENT OFFICE.

4 WILLIAM C. CARROLL AND BURTON F. HALES, OF CHICAGO, ILLINOIS.

SURGICAL PUMP.

SPECIFICATION forming part of Letters Patent No. 444,690, dated January13, 1891.

Application filed October 18, 1390 Serial No. 368,508. (No model.)

To @ZZ whom it may oon/cern.-

Be it known that we, WILLIAM C. CARROLL and BURTON F. HALEs, of Chicago,in the State of Illinois, have invented certain new and usefulImprovements in Surgical Pumps, of which the following is aspecification. I

Our invention relates to that class of surgical pumps in which aflexible tube coiled within a cylindrical casing is used in conjunctionwith a traveling roller working along the tube for propelling any liquidthrough the same; and the objects of our improve ments are, iirst, toprovide improved means for adjusting the traveling roller relatively tothe tube in order to regulate the pressure of said roller upon the tubeand adapt the same to different sizes of tube, and, second, to betterthe construction of the mechanism for connecting the instrument to atable or bedrail in either vertical or horizontal position, and toprevent the instrument from turning or shifting its position under thestrain applied to its crank in operation. These objects we have attainedby the construction illustrated inthe accompanying drawings, in which-Figure l is a rear elevation of such instrument containing our inventionand showing the manner of inserting the tube in the casing. Fig. 2 is alike view wit-h the tube in place within the casing. Fig. 2l is a detailshowing, in perspective, one of the tube-holders detached from thecasing. Fig. 3 is a similar view to that shown in Fig. 2 with the rearplate of the casing removed to show the means for regulating the rolleras applied to the casing. Fig. 4 is a section on the line 4t i of Fig.3, looking toward the left. Fig. 5 is a section on the line 5 5 of Fig.3, looking toward the right. Fig. 6 is a detail showing, in enlargedside elevation, the roller, its shaft, and the manner of connecting itwith its shaft. Fig. 7 is a detail showing a section on the line 7 7 ofFig. 6, looking toward the left.

In the drawings, A designates the cylindrical casing, which is providedwith the usual openings at d, Fig. 3, for inserting the tube B. As atpresent constructed, the tube has one of its ends inserted at one ofthese open.- ings and pushed round, following the interior of thecylindrical easin g, and out at the other, this operation being onewhich cannot be easily and readily performed. To remedy this, we providean opening a in one of the end caps or pieces a2 of the casing at theside opposite to the openings a and large enough to allow the tube topass in when folded upon itself, so that by throwing the travelingroller C to one side, as seen in Fig. l, one end of the tube can beinserted at the large opening a and run out at the opening aat theright. Then by moving the crank D so as to shift the traveling roller tothe opposite side, as seen in Fig. 2, the opposite end of the tubing canbe inserted at said opening a and run out at the opening d at the left.In like manner the tube can be drawn out at the opening a.

Exterior to the openings a we provide plates E, which are securelyattached to the cylindrical casing and provided at their diagonallyopposite corners with two hooks e, the points of which are extended inopposite and parallel directions. The space between said hookscorresponds with the diameter of the tube, so that by bringing the tubeunder one of said hooks it may be readily deflected to one sidesufciently to enable it to spring back under the other, and thus be heldby the operation of both said hooks securely to the casing.

For regulating the traveling roller relatively to the tube and adaptingthe same to diHern ent sizes of tube we support the yoke F or frame inwhich it is journaled upon the operating-shaft F', with which the crankD is connected, by means of a sliding connection composed of an arm orarmsf, working in a sleeve or sleevesf, attached to the operatingshaft,so as to permit the yoke to move t0- ward and from the operating-shaft.rPhe bot* tom or inner part of the yoke is provided with an inclinedpiece G, and the operatingshaft is slotted or recessed to receive the inner end of a piece G and permit the same to move lengthwise of saidshaft. A screw g is arranged in the slot or recess of the operatingshaftfor operating the piece G by means of a thumb-piece g on the end of saidscrew, whereby the piece G may be either drawn against the incline G forforcing the traveling roller out against the tube or pushed back topermit the recoil of the tubeto throw said roller back, said screw beingshouldered and provided with a split washer g2, which IOO rests againstthe open end of the slot in such manner as to cause the screw to remainin a fixed longitudinal position and move the piece G in eitherdirection by reverse rotations of the screw.

An adjustable stop is provided, which consists of a screw I-I, adaptedto strike a lug or projection h on the piece G at the point required tolimit the amount of pressure of the traveling roller on the tube.

The thumb-piece turns with the operatingshaft, and in order to preventthe rotation of said shaft from loosening it a Washer h is ixed theretoand adapted to receive the t'riction of the end cap of the casing, whichwould otherwise be upon the thumb-piece.

The instrument is provided with the screwclamp I for attaching it to thetable or bedrail I. As usually made, this clamp is provided With acylindrical socket, adapted to hold the cylindrical shank of theinstrument by means ot' a set-screw, as J. Ve have provided the sameWith tWo sockets K, intersecting each other at right angles, andarranged the same set-screw so that it Will tighten the shank, in eitherof the sockets, to hold the instrument in a vertical or a horizontalposition, or attach it, in either ot' these positions, to a horizontaltable-leaf or vertical bed-rail. Ve also make that portion J of theshank upon which the set-sereT impinges square or angular incross-section, the other portion being lett cylindrical, Which willpermit the instrument to be turned freelj`7 in the socket when the screwis loosened and at the same time furnish a iiat surface for the innerend of the screw to rest upon when tightened, which Will prevent theturning of the instrument by the vapplication of such force as canreadilyrbe applied With the ngers of the operator upon the thumb-piece.

Having thus described our invention, what We claim, and desire to secureby Letters Patent, is

l. In a surgical pump ofthe class described, and in combination, theyoke for supporting the traveling roller, provided With an inclinedpiece, as G, connected with the operatingshaft by a radially-slidingconnection, a sliding piece adapted to Work in connection With saidinclined piece, and a screw and thumbpiece for operating the same,substantially as specified.

2. In a surgical pump ofthe class described,

4and in combination, the yoke for supporting the traveling roller,provided With an inclined piece connected with the operating-shaft by aradially-sliding connection, a sliding piece in connection with saidinclined piece, a screw and thumb-piece for operating the saine, and anadjustable stop for regulating the amount of movement of said slidingpiece, as specified.

3. In a surgical pump of the class described, and in combination, theclamp I, provided with two cylindrical sockets intersecting each otherat right angles, a set-screw adapted to both of said sockets, and acylindrical shank having that portion of its surface which falls in theline of the set-screw made angular' in cross-section, as and for thepurpose specified.

WILLIAM C. CARROLL. BURTON F. HALES. Witnesses:

JOHN H. WHIPPLE, J. W. MERRIAM.

